Update body of README

README describes the project this project is based upon instead of this project.

Let's update the body to describe this project.

README.md

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 ![Ui](docs/images/Ui.png)
 
-* This is **a sample project for Software Engineering (SE) students**.<br>
-  Example usages:
-  * as a starting point of a course project (as opposed to writing everything from scratch)
-  * as a case study
-* The project simulates an ongoing software project for a desktop application (called _AddressBook_) used for managing contact details.
-  * It is **written in OOP fashion**. It provides a **reasonably well-written** code base **bigger** (around 6 KLoC) than what students usually write in beginner-level SE modules, without being overwhelmingly big.
+* This is an application made to assist **Customer Service Representatives (CSRs) of delivery companies**.<br>
+* The application is used for managing contact details of the clients of CSRs.
+  * It is **written in OOP fashion**.
   * It comes with a **reasonable level of user and developer documentation**.
-* It is named `AddressBook Level 3` (`AB3` for short) because it was initially created as a part of a series of `AddressBook` projects (`Level 1`, `Level 2`, `Level 3` ...).
+  * It is designed to cater to users with fast typing speeds.
+* This project is based on the AddressBook-Level3 project created by the [SE-EDU initiative](https://se-education.org).
 * For the detailed documentation of this project, see the **[ServiceTrack Product Website](https://ay2425s1-cs2103t-t17-2.github.io/tp/)**.
-* This project is a **part of the se-education.org** initiative. If you would like to contribute code to this project, see [se-education.org](https://se-education.org/#contributing-to-se-edu) for more information.